Reversing gear attachment for drum hoists



W. E. MORGAN -REVERSING GEAR ATTACHMENT FOR DRUM HOISTS May 27, 1930;

2 Sheefs-Sheet 1 Filed March 5, 1926 I INVENTOR Well: In or arz M1 ATTORNEY? May 27, 1930. w. E. MORGAN 1,760,514

REVERSING GEAR ATTACHMENT FOR DRUM HOI STS I Filed March 5, 1926 2 Sheets-Sheet 2 11v VENTOR a/mm EJ101740 BY EZ,

ATTORNEY$ Patented May 27,1930

um'rn sra're WILLIAM E. MORGAN, or EAST LANSING-Qivnonisannssicnon To vovo ENGINE COMPANY, or LANSING, monrean V a a nnvnnsrne GEAR erracnivrnn'r son nntnvr norsrs Application filed. March 5, 1926 Serial No. 92,443.

This invention relates to an improved twoa speed reversing gear attachment for drum hoist.

The objects of the invention are:

First, to provide improved reversing mechanism.

Second, to provide an improved sheave structure wherein the sheave serves as a housmg for the gear.

Objects relating to details and economies of constructionand operation will appear from the detailed description to follow. 1 The invention is clearly defined and pointed out in the claim.

A structure which is a preferred embodiment of the invention is illustrated in the accompanying drawings, forming a part of this application, in which: r

Fig. 1 is a perspective view of the essential parts of my improved reverse mechanism for drum hoist attachment.

Fig. 2 is an enlarged detail vertical sectional elevation view, portions being shown in full lines, taken on the plane corresponding to line 2-2 of Figs. 3 and 5. i i

Fig. 3 is a detail plan view, partially in section, taken on the irregular line 3-3 of Figs. 1 and 2, the spur gear being in full lines and a fragment of the drum gear being shown, the shaft 3 being omitted.

Fig. 4 is a detail sectional view of the thrust bearing for the drum shaft, taken on the plane of line 2-2 of Fig. 3. i

Fig. 5 is a detail sectional View taken on line 55 of Figs. 2 and 3, the position of certain gears being indicated by dotted lines.

Parts of the drawing will be referredto by their nunieralsof reference which identify the same parts in all the views.

1 is the main frame supported on the usual skids 2. 3 is the main driven shaft carrying the two speed sheave 4 which is recessed at 41 to provide a housing for the main gears. 5 is the smaller sheave groove flanged on the face of the pulley and projecting beyond its hub 42 (see Fig. 6 is the larger sheave groove. 7 is the brakerim and brake. Radial ribs 43 strengthen the shell.

1 The main gear 8 is keyed to the shaft 3. The driving shafts 9 and 9 are each provided with pinions 10 which mesh with and drive the main gear 8. I Journal boxes 11, 12 are provided for each shaft 9 and 9 Gears 13 and 13*, each provided with clutch memhere, are journaled on the shafts 9 and 9 Shaft 9 is for direct drive, shaft 9 for reverse.

Each shaft 9 and: 9* is shouldered near the endand provided with a thrust bearing 91. This comprises a fiber thrust bearin disk 92, a collar 93 fitting against the shofflder and d to the saidshaft at 9a, the whole being ned in place by the nut 95 secured by the axially disposed set screws96 (see particuanism is splined at 151 to the shaft so that can slide longitudinally along the same and engages a clutch disk 132 on the face of the gear 13. for the sleeve 16 which is movable lengthwise ofthe shaft 9 or 9. It is provided with a collar 161, which is engaged by the thrust rod 17 having a cross bar or key 171 disposed in a suitable slot 91 in the said shaft 9 or 9. Right and left hand screws 18 and 18 are carried in suitable nuts axially disposed to act upon the thrust rod 17. Bronze contact disks 181 are held by suitable collars 182 on the ends of the screws 18 and 18, detailed particularly in Fig. 4.

These screws are operated simultaneously by the parallel lever 19, 19 which are seclutched to the shaft 9* and the drum drives a l he Free This movable member 15 is recessed View by the direct drive, the left-hand gear 13 meshing directly with the gear 22 of the hoist drum, shown in fragment in Figs. 3 and 5.

When the lever is forced over to the left, the right-hand screw with left-hand thread is forced in, clamping the right-hand clutch and driving the right-hand gear 13. At the same time the left-hand gear 13 is released so that it revolves on the shaft 9 as an idler. This results in reversing the direction of drive of the sheave 42. A suitable latch device 201 is provided for locking the lever at the center or neutral position.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

In a reversible gear structure, the combination of a frame, a main shaft with a gear and recessed sheave thereon, said sheave embracing said gear'and containing a series of peripheral rooves, parallel drive shafts with gears keyed thereto and meshing with the main gear and housed within the said recess of said sheave, a hoist gear, intermeshing gears with clutch faces revolubly mounted on said drive shafts, one of which is in mesh with said hoist gear, clutches therefor each comgrising a member fixed to each of said 'sha s and an adjustable member slidable thereon to embrace and engage said clutch faces on said gears, and right and left hand screw thrust members for actuating the said clutch members coupled to be operated simultaneously b parallel levers adjusted in a central positlon to release both clutches and on movement of said lever to one side or the other to lock said clutches alternatively, wherebfi on clutching one or the other of said gears t e direction of drive of the sheave is 40 reversed.

h I1:1 Witness whereof I have hereunto set my WILLIAM E. MORGAN. 

